DE202009011353U1 - Device for producing a closure button made of glass - Google Patents

Abstract

Device for producing a closure button (3) made of glass for bottle clamp closures or lever closures with a multi-part mold (2) defining the negative contour of the closure button to be produced in the closed state, a feeder system for feeding the mold with molten glass and two in the region of the mold arranged, mutually zubewegbaren pins (18, 18 ') for introducing a through hole (26) in the closure button for receiving an upper bracket of the yoke or lever lock, wherein the shape of a fixing part (4) with at least one part (11) of a neck portion (12) of the closure button corresponding to the recess (9), a central part (5) of in particular two relative to each other and perpendicular to the longitudinal axis of the mold displaceable and self-centering detachable part mold elements (13, 13 ') which in the coupled state and applied to the fixing part a at least one main area a head section (16 ) of the closure button to be produced corresponding cavity (14) define, as well as a head portion cavity closing upper part (6) with a central, vertically displaceable press ram (7), comprising.

Description

The The present invention relates to an apparatus for manufacturing a glass closure button for bottle strap closures or lever locks.

Such devices are known in the art (e.g. DE 19649030 A1 ). The closure buttons which can be produced with these devices have a head section and a neck section which adjoins the head section and which is narrower than the head section. The at DE 19649030 A1 described closure buttons have a constriction between the head portion and the neck portion. About the neck portion of these fastener buttons a rubber sealing ring is raised, which is held in the region of the constriction, thus sealing a bottle opening with a closed clip closure.

Another closure button shape, which can also be produced with the device according to the invention, is, for example, in EP 1094010 A1 described. In these fastener buttons, a gasket of an elastic portion and a non-elastic portion is clipped onto the neck portion of the fastener buttons. In these closure buttons, the constriction between the head portion and neck portion is formed only slightly.

The Known closure buttons have a transversely through the head portion extending bore for receiving the upper hanger of a clip closure on.

In the DE 19649030 A1 described apparatus for producing the closure buttons comprises a rotatable rotary table with a variety of shapes. The molds each consist of two mold halves, which are movably mounted against each other in the radial direction for opening and closing the molds. For the preparation of the bore extending transversely through the head portion needles are mounted radially movable, the ends of which radially penetrate the shape in the head part of the closure button. In a pressing station, a press die is provided, which presses on the liquid, contained in the form glass gobs. After passing through a cooling section, the needle is moved back radially and the mold opens radially.

The Prior art devices have several disadvantages on. Thus, the devices of the prior art always the risk that the finished lock button of one of the two mold halves is taken when opening or the lock button falls over. At a surface temperature of about 500 ° C, which is given shortly after the pressing process is, the closure button can stick to one of the two mold halves stay. A proper removal of the finished Glass part is not possible in this case. Further lies a big problem is that when closing again the mold halves these forms by the not removed Lock button destroyed or at least damaged can be. An interruption of production is in this case unavoidable.

Of the present invention is based on the object, a device for making a glass closure button to provide, which overcomes the disadvantages of the prior art.

These The object is achieved by a device with the features of claim 1.

Also the device according to the invention has in the Usually a rotatable round table, on which the forms arranged are.

By the fact that the shape of the invention Device a fixing part with at least a part of the neck portion the closure button to be produced corresponding recess has, the shutter button remains after opening the Middle part by moving the part mold elements perpendicular to Form longitudinal axis fixed in the form. This prevents that the closure button when moving apart of the part elements is taken from one of the two partial form elements.

With Advantage is the recess of the fixing part on the bottom side by a limited to a Ausschubfunktion owning plunger. This tappet is among other things the removal the finished closure button from the recess of the fixing of the Eased form.

In As a rule, the fixing part is formed in one piece. This is simplified including the construction of the entire device.

at an embodiment of the invention Device form the self-centering detachable part form elements the middle part of the mold on the one hand an upper portion of the neck portion the closure button and on the other hand, the head portion of the closure button almost over its entire height.

Preferably is the end face (pressing surface) of the press ram concave. This ensures that a convex glass product formed arises.

With Advantage is in the region of the fixing part of the mold, preferably in Annular gap or in grooves between fixing part and plunger, a vacuum can be applied. Due to this vacuum, the fixation of the Lock button be strengthened in the fixing part. This vacuum also helps to prevent the finished Lock button after moving apart of the part form elements adheres to one of these partial form elements and is taken away.

at a particularly preferred embodiment of the invention Device are the movable pins independent of the Part form elements of the central part of the mold movable. Thereby can the movable pins shortly after molding the glass part (after the pressing process) back out of the glass part. The lock button already has a cooled at this time Outer skin, while the inner area is still very much is hot.

With Advantageous, the movable pins are at least partially conical educated. In a preferred embodiment of Device according to the invention have the movable Pins each have a cylindrical outer Area as well as a conical inner area, which serves to form the bore in the closure button, on, wherein the inner region is preferably in a to the cylindrical outer Area adjoining, an insertion bevel forming the first section and a second section, wherein the first section has a steeper cone angle than the second one Section has. By the described preferred form of the movable Pins form this one in the outer area of the lock button Insertion bevel at a relatively steep angle to during the later assembly of the strap insertion of the wire of the strap. In the inner area the closure button is characterized by the described, preferably shaped Pins a Abnahmeschräge at a relatively shallow angle formed pulling the pins out of the lock button facilitated. This slight slope ensures that the wear of the pins remains low.

In As a rule, the movable pins are in the area of the middle part and thus arranged in the region of the mold halves of the mold.

Preferably is the angle between the longitudinal axis of the manufactured closure head and the axis of the movable pins about 85 ° to about 90 °. So this angle does not have to be must be 90 °. It may also be beneficial be when the said angle is less than 90 °. Of the Reason for this is the following: The shrinkage of the glass will then be less strong up towards punch then when the distance between the moving pins and the punch is small. It is conceivable that is desired, the upper curvature the shutter button to keep the parts in automatic Feeding devices for mounting the wire hanger safer to position. Furthermore, demand the automatic closing systems from breweries that focus in the shutter button far down is that the lock button is hanging vertically. This claim may cause the top of the lock button to reduce in weight, that is to reduce its height / thickness. Will one or both Requests complied, the lock button is less up shrink (the through hole widen less) and the Wire hanger then not there as desired in the Outdoor areas but lie in the middle where the two movable pins abut each other. Move but now these pins slightly inclined from the side areas the lock button upwards towards the head end of the Lock button, the lift-out angle of the movable Pens upwards partially or completely compensated, so despite lesser or total lack of shrinkage in this area Nevertheless, the upper area of the hole in the finished article just is and the lock button on the wire hanger does not "tilt".

• – Zuführen von flüssigem Glas in die geschlossene Form, in der die bewegbaren Stifte mit ihren Stirnseiten aneinander stoßen;
• – Abdecken der geschlossenen Form mit einem Deckring;
• – Pressen des Glases durch den Pressstempel;
• – Abheben von Pressstempel und Deckring;
• – Kühlen des oberen Bereiches des Kopfabschnittes des gebildeten Verschlussknopfes;
• – Auseinanderbewegen der bewegbaren Stifte;
• – Öffnen des Mittelteils durch Verschieben der Teilformelemente senkrecht zur Formlängsachse, wobei der gebildete Verschlussknopf im Bereich des Fixierteils fixiert bleibt;
• – Herausnehmen des fertigen Verschlussknopfes aus dem Fixierteil der Form.

The present invention further relates to a method for the production of a closure button made of glass for bottle clamp closures or lever closures with the aid of the device according to one of claims 1 to 11, characterized by the following method steps:

• - feeding liquid glass into the closed mold, in which the movable pins abut each other with their end faces;
• - covering the closed mold with a cover ring;
• - pressing the glass through the press die;
• - Lifting of press ram and cover ring;
• - cooling the upper portion of the head portion of the formed closure button;
• - moving the movable pins apart;
• - Opening the middle part by moving the part-forming elements perpendicular to the longitudinal axis of the mold, wherein the closure button formed remains fixed in the region of the fixing part;
• - Remove the finished closure button from the fixing part of the mold.

Advantageous Among other things, in this method is that the movable pins be moved apart before opening the middle part. This and the fixing in the region of the fixing part prevents that the closure button when opening the middle part through Moving the part-form elements perpendicular to the longitudinal axis of the mold is taken by one of the two part-form elements.

Preferably is in the range during the opening of the middle section the fixing part created a vacuum. This also contributes for fixing the lock button during opening the middle part and the indexing of the round table between the Mold opening station and the removal station at.

With Advantage is gained during the opening of the middle part, preferably with a pressure piece, on the head section of the formed lock button. This carries also helping to ensure that a take the lock button one of the partial form elements to the outside or tipping This part is prevented during the opening process.

With Advantage, the movable pins are ready for about 3 to 15 seconds, preferably about 5 seconds after pressing the glass moved apart.

With Advantage is the shutter button after cooling still at least once superficially heated, that is fire polished. This will make the entire closure button total more stable and creates a pleasant smooth surface.

Further Features of the invention will become apparent from the following description of preferred embodiments of the invention in combination with the drawings and the dependent claims. Here you can the individual features in each case alone or in Combination be realized with each other.

In show the drawings:

1 FIG. 3 is a schematic axial sectional view of the closure button manufacturing mold used in the apparatus during the pressing operation; FIG.

2 : the representation of 1 at the moment of opening the middle part of the mold;

3 : a closure button, made with a device according to the invention or a method according to the invention.

1 shows a schematic axial representation of the inside of the device 1 used form 2 for making a closure button 3 , Form 2 includes a fixing part 4 , a middle section 5 as well as a top 6 To which an axially movable press stamp 7 belongs. The partial form elements 13 and 13 ' be from a two-piece mold holder 8th and 8th' held and the fixing part 4 from a holder 34 , The preferably cylindrically shaped ram 7 is separately or performed exactly in the upper part of the mold.

In the fixing part 4 is a recess 9 provided, which on the bottom side by a plunger 10 is closed, whose diameter is smaller than the bottom surface of the recess 9 , The pestle 10 is mounted axially movable Lich. The pestle 10 takes over at the removal station Ausschubfunktion with respect to a finished closure button. Through the recess 9 becomes the lower area 11 of the neck section 12 the lock button 3 established.

The middle part 5 the form 2 comprises two partial form elements 13 . 13 ' , The partial form elements 13 . 13 ' of the middle section 5 are relative to each other and perpendicular to the longitudinal axis of the mold 33 displaceable. These elements 13 . 13 ' are designed to avoid any lateral displacement when driving together self-centering and create a cavity 14 stuck by the shell 6 is closed. By the partial form elements 13 . 13 ' becomes the upper area 15 of the neck section 12 and a main portion of the head portion 16 the lock button 3 established. The shape of the upper area 17 of the head section 16 the lock button 3 gets through the shell 6 and in particular by the press punch 7 established. During operation of the device according to the invention, the gobs provided by means of a feeder device can be introduced in such a way that the gob formed can first flow around the pins and then downwards and the glass mass is applied to the mold walls, the mold being shaped by means of your shell 6 closed when the glass mass the cavity 14 has essentially completed. This process is supported by applying a vacuum in the area of the fixing part 4 ,

In the area of the two partial form elements 13 . 13 ' are two mutually movable pins 18 . 18 ' arranged for the introduction of a through hole in the closure button for receiving an upper hanger of a yoke or lever closure. The two pens 18 . 18 ' are independent of the form elements, in particular independent of the part form elements 13 . 13 ' movable.

For carrying out the method according to the invention, the movable pins 18 . 18 ' even before the filling of liquid glass into the mold together, so that they collide with their front sides together. After pressing the glass part by means of the press ram 7 be the pins 18 . 18 ' already moved apart after about 5 seconds. This movement takes place, as already mentioned above, independently of the partial form elements 13 . 13 ' that is, the middle part 5 is still closed when the pins 18 . 18 ' be driven apart.

The movable pins 18 . 18 ' each comprise a cylindrical outer region 19 . 19 ' and each a conical inner region 20 . 20 ' leading to the formation of the hole in the lock button 3 serves. The inner areas 20 . 20 ' of the pens 18 . 18 ' are divided into a to the cylindrical outer area 19 . 19 ' subsequent, an insertion bevel 28 . 28 ' forming the first section 22 . 22 ' and a second section 23 . 23 ' , where the first section 22 . 22 ' a steeper (larger) cone angle than the second section 23 . 23 ' having.

In 2 is the device according to the invention with already finished shaped closure button 3 shown, with the pins 18 . 18 ' already out of the lock button 3 have gone out. At this stage, the shutter button becomes 3 at the top 17 of the head section 16 from a pressure piece 24 held, which from the top of the head section 16 the lock button 3 suppressed. This pressure piece 24 carries next to the fixing part 4 for fixing the lock button 3 at the moment of opening the middle part 5 at. Also for fixing the lock button 3 at the moment of opening the middle part 5 contributes a vacuum, which is in the area of the fixing part 4 and the plunger 10 can be applied. In this area grooves are introduced (not shown here), in which a negative pressure can be generated. An annular gap between the fixing part 4 and pestles 10 is also suitable for this purpose.

The required cooling of the mold takes place primarily by radiation of the heat and cooling with forced air, after a relatively short time the mold already opened and the closure button obtained, the outdoor area still has a temperature of about 400 ° C can be removed. The upper area of the lock button 3 , especially the upper area 17 of the head section 16 the lock button 3 is already immediately after lifting the press ram 7 and the bezel 32 cooled with air so that it remains dimensionally stable. Glass shrinks like most materials during cooling. A shrinkage of the hot glass is due to the cold outer skin only in the area previously with the pins 18 . 18 ' created hole possible, the two outer areas 25 . 25 ' the transverse bore 26 , which are cooler than the inner areas, remain stable and dimensionally stable. Shrinking, however, increases the previously created transverse bore 26 in the middle area 27 , In this area also higher temperatures prevail. This ensures that there the transverse bore is ultimately larger than at the important for the dimensional accuracy of the article areas at the end of the insertion bevels 28 . 28 ' ,

The removal of the finished lock button 3 after the mold has been opened by a gripper acting on the head part. This is supported by a vertical movement of the plunger 10 ,

On this way will any sticking of the lock button prevented in the mold.

3 shows a finished lock button 3 after removal from the mold 2 , Due to the shrinkage of the glass in the middle area arise in the middle area 27 the transverse bore 26 an upper and lower arch 29 . 29 ' , In the outer, cooler regions of the shutter button 3 stay the insertion bevels 28 . 28 ' preserved dimensionally stable. The openings 30 . 30 ' the transverse bore 26 have a diameter of approximately 5 millimeters. Through these relatively large openings, the wire hanger, for example, a clip closure slightly from both sides in the transverse bore 26 be introduced. Between the insertion areas, which through the insertion bevels 28 . 28 ' be formed, and the arched center area 27 the transverse bore 26 are bottlenecks 31 . 31 ' in the cross hole 26 emerged. At these bottlenecks 31 . 31 ' has the cross hole 26 the smallest diameter. These bottlenecks 31 . 31 ' serve the two-sided fixation of the bracket. This will ensure that the lock button 3 , which is mounted on a bracket, can not tilt about its longitudinal axis on the wire bracket. Such tilting would be extremely problematic and disturbing when automatically closing the bottles.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19649030 A1 [0002, 0002, 0005]
• - EP 1094010 A1 [0003]

Claims (11)

Device for producing a closure button ( 3 ) made of glass for bottle clamp closures or lever closures with a multi-part, in the closed state, the negative contour of the produced closure button defining shape ( 2 ), a feeder system for feeding the mold with molten glass and two arranged in the region of the mold, successively movable pins ( 18 . 18 ' ) for introducing a through bore ( 26 ) in the closure button for receiving an upper bracket of the ironing or lever closure, wherein the shape of a fixing part ( 4 ) with at least one part ( 11 ) of a neck portion ( 12 ) of the closure button corresponding recess ( 9 ), a middle part ( 5 ) from in particular two relative to each other and perpendicular to the longitudinal axis of the mold displaceable and self-centering detachable partial form elements ( 13 . 13 ' ), which in the coupled and on the fixing part adjacent state at least a main portion of a head portion ( 16 ) of the closure button corresponding cavity ( 14 ), and a top portion closing the head portion cavity ( 6 ) with a central, vertically displaceable press die ( 7 ). Device according to claim 1, characterized in that the recess ( 9 ) of the fixing part ( 4 ) on the bottom side by a plunger having a Ausschubfunktion ( 10 ) is limited. Device according to one of claims 1 or 2, characterized in that the fixing part ( 4 ) is formed in one piece. Device according to one of the preceding claims, characterized in that the self-centering detachable part form elements ( 13 . 13 ' ) of the middle part ( 5 ) the form ( 2 ) on the one hand an upper area ( 15 ) of the neck portion ( 12 ) of the lock button ( 3 ) and on the other hand the head section ( 16 ) of the closure button form almost over its entire height. Device according to one of the preceding claims, characterized in that the end face (pressing surface) of the press ram ( 7 ) is concave or planar. Device according to one of the preceding claims, characterized in that in the region of the fixing part ( 4 ) the form ( 2 ), preferably in grooves or in the annular gap between the fixing part and plunger ( 10 ), a vacuum can be applied. Device according to one of the preceding claims, characterized in that the movable pins ( 18 . 18 ' ) independent of the subform elements ( 13 . 13 ' ) of the middle part ( 5 ) the form ( 2 ) are movable. Device according to one of the preceding claims, characterized in that the movable pins ( 18 . 18 ' ) are at least partially conical. Device according to one of the preceding claims, characterized in that the movable pins ( 18 . 18 ' ) each have a cylindrical outer area ( 19 . 19 ' ) and in each case a conically formed inner area ( 20 . 20 ' ) used to form the bore ( 26 ) in the lock button ( 3 ), wherein the inner region preferably in an adjoining the cylindrical outer region, an insertion bevel ( 28 . 28 ' ) forming the first section ( 22 . 22 ' ) and a second section ( 23 . 23 ' ), wherein the first portion has a steeper cone angle than the second portion. Device according to one of the preceding claims, characterized in that the movable pins ( 18 . 18 ' ) in the area of the middle part ( 5 ) the form ( 2 ) are arranged. Device according to one of the preceding claims, characterized in that the angle between the longitudinal axis of the mold ( 2 ) and the axis of the movable pins ( 18 . 18 ' ) is about 85 ° to about 90 °.